DL 8931 then DE 5052 at San Francisco
Los Angeles → San Francisco → Seattle
Timetable, San Francisco time
00:44DL 8931 from Los Angeles at the gate
10:39DE 5052 to Seattle leaves the gatealso QR 8794
9 h 55 apart on the timetable
The last days
DL 8931 and DE 5052 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.